Identify the incorrect statement among the following .

Options

A. Among `V,Cr,Mn` and `Fe,Mn` is expected to have the highest third ionization enthalpy.
B. `Eu(II)` acts as a strong reducing agent.
C. The ionic sizes of lanthanoids decrease in general with increasing atomic number.
D. `VOCl_(2)` and `FeCl_(2)` are expected to have the same magnetic moment ( 'spin only' )

Answer

4

Explanation

`VO^(2-),3d^(1)` electron configuration , `mu_(BM)=sqrt(3)`
`Fe^(2+),3d^(6)` electron configuration , `mu_(BM)=sqrt(24)`